Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
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AfterRoofers in San Francisco, CA
Most roofing work in San Francisco happens on flat or near-flat membranes, not pitched shingle roofs. The city’s Victorian and Edwardian rowhouses, built with shared party walls and zero-pitch decks, demand torch-down modified bitumen, TPO, or tar-and-gravel systems that most suburban roofers rarely touch. We’re Birchbark Roofing, part of the Cedarwell family since 2000, and we dispatch crews from our San Francisco Bay Area office to handle the specific challenges this city’s housing stock and marine climate create. Call (424) 766-4937 to schedule your free estimate.
Why San Francisco Homes Are Different
San Francisco’s roofing landscape starts with its architecture. The pre-1930 Victorian and Edwardian rowhouses packed into the Mission, Castro, Haight, Western Addition, and Noe Valley were built wood-frame with shared party walls and flat roofs originally sealed with built-up tar-and-gravel. Decades of re-roofing patches now hide under those surfaces, so every tear-off reveals surprises: multiple membrane layers, rotted skip sheathing, or decking lag-bolted straight through the waterproofing.
That last problem comes from the city’s rooftop-deck culture. Homeowners across San Francisco have bolted outdoor living spaces onto flat Victorian roofs, often without permits, and the Department of Building Inspection now forces remediation of those penetrations during any permitted re-roof. We’ve pulled permits where the scope doubled once we exposed how many bolts had compromised the deck.
The climate sharpens everything. Karl the Fog, the Pacific marine layer that funnels through the Golden Gate, blankets the Outer Sunset, Outer Richmond, and Twin Peaks corridors for weeks even in July. Flat membranes in those neighborhoods never fully dry between events. Seam failures, blister formation, and moss colonization run years ahead of what you’d see two miles east on the sunnier slope toward the Bay. A TPO seam that might last fifteen years in San Jose often shows fatigue in eight here.
Post-WWII stucco tract homes in the Outer Sunset and Outer Richmond repeat the pattern: flat or very low-slope, membrane-dependent, and chronically damp. There is no “standard” San Francisco roof because there is almost no pitched surface to shingle.
Our Main San Francisco Services
San Francisco homeowners call us most often for these three jobs. Each has its own page with detailed scope, pricing, and neighborhood-specific notes.
Roofing Company in San Francisco
Our Roofing Company in San Francisco handles inspections, maintenance programs, and the ongoing care that flat-membrane roofs in this climate demand. We check seams and flashings on modified bitumen systems, assess drainage on zero-pitch decks, and document conditions before the fog season accelerates hidden damage. Every visit includes shoe covers at the door, drop cloths through hallways, and a photo of the completed clean-up before we leave.
Roof Repair in San Francisco
Our Roof Repair in San Francisco crews address the failures this city specializes in: seam splits on TPO, ponding on improperly sloped tar-and-gravel, and the leaks that follow deck penetrations from unpermitted rooftop additions. We carry modified bitumen rolls, TPO patch kits, and compatible adhesives so we’re not waiting on supplier runs while water enters the house. You’ll see your written price before any work starts.
Roof Replacement in San Francisco
Our Roof Replacement in San Francisco service manages full tear-offs on rowhouses where access is tight, party walls are shared, and debris must be chuted or carried, never dropped. We coordinate with the Department of Building Inspection on permit pulls, remediate unpermitted deck penetrations when required, and specify membranes rated for sustained marine moisture. The 365-Day Done Right Promise covers every replacement we complete.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in San Francisco
We work with GAF, CertainTeed, Owens Corning, and IKO membranes and accessories, stocking compatible patch materials and fasteners locally so repairs don’t wait on supplier lead times. Most standard repair calls in San Francisco are completed with materials already on the truck. Our brands page lists full specifications.
Pricing for Roofers in San Francisco, CA
| Service | Typical range in San Francisco |
|---|---|
| Flat roof leak repair (modified bitumen patch) | $450 - $850 |
| TPO seam repair (up to 10 linear feet) | $380 - $720 |
| Tar-and-gravel spot repair (2-4 sq. ft.) | $320 - $580 |
| Drainage correction / scupper unclogging | $280 - $520 |
| Flashing replacement (chimney or parapet) | $550 - $1,100 |
| Full flat roof replacement (modified bitumen, per square) | $650 - $950 |
| TPO full replacement (per square) | $720 - $1,050 |
| Deck penetration remediation (permit-required) | $1,200 - $2,800 |
| Rooftop deck removal and re-waterproofing | $3,500 - $7,500 |
| Annual maintenance program (flat roof, 2 visits) | $580 - $920 |
Prices push higher in San Francisco when we encounter multiple membrane layers requiring full tear-off, deck rot from long-term ponding, or unpermitted penetrations that must be remediated before the DBI will sign off. Whatever we find, you’ll get your exact number in writing before any work begins. No change orders, no surprises.
Neighborhoods We Serve in San Francisco
Our crews work across the city’s full geography, from the fog-drenched flats of the Outer Sunset to the sunnier eastern slope of Noe Valley. Scheduling and dispatch run from our San Francisco Bay Area office, with most appointments offered within a few business days.
- Mission District
- Castro
- Noe Valley
- Outer Sunset
- Outer Richmond
Service Area – Cities Near San Francisco
We also handle roofing calls from homeowners just outside the city limits. Our crews regularly work in Daly City, CA, Brisbane, CA, Sausalito, CA, and South San Francisco, CA, bringing the same flat-membrane expertise and written-price process to those communities.
Serving San Francisco, CA - Our Local Coverage Area
We’re based in the San Francisco area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Roofers in San Francisco
Most leak calls in San Francisco are scheduled within two to three business days, with emergency tarping available for active water intrusion when weather allows safe ladder access. Call (424) 766-4937 and a live person will answer 24 hours a day, 7 days a week, including nights and weekends.
Yes. We handle permit applications with the San Francisco Department of Building Inspection for any job requiring it, including full replacements and deck-penetration remediation. The permit status and inspection schedule are tracked by our office and shared with you in writing.
Absolutely. We coordinate door schedules with you if pets need to stay inside, use pet-safe product choices where available, and protect floors with shoe covers and drop cloths on every visit. Our background-checked, uniformed technicians explain the work plan before starting so your family knows what to expect.
What happens when you call
- 1A real person answersNo phone trees - talk to a local roofing pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What San Francisco Customers Say
"After a storm we had a few spots to fix. They were gentle around the garden, laid tarps, and swept the driveway spotless. You'd never know a roof crew had been here."
- Dawn Kirkland"Roof repair after a leak. What won me over was the cleanup, they ground sheeted the flower beds so no debris fell in, and they ran a magnet over the whole yard for nails. Careful crew."
- Gordon Fiske"They repaired some lifted shingles and were so neat about it. Covered the deck, cleaned the gutters of debris when they were done, and checked the yard twice for nails. Kids play out there so that mattered."
- Lena Hargrove